diff --git a/src/app/p/[photoId]/image/route.tsx b/src/app/p/[photoId]/image/route.tsx
index 1852553e..73dbdfdf 100644
--- a/src/app/p/[photoId]/image/route.tsx
+++ b/src/app/p/[photoId]/image/route.tsx
@@ -4,14 +4,14 @@ import PhotoImageResponse from '@/image-response/PhotoImageResponse';
 import { getIBMPlexMonoMedium } from '@/site/font';
 import { ImageResponse } from 'next/og';
 import { getImageResponseCacheControlHeaders } from '@/image-response/cache';
-import { STATICALLY_OPTIMIZED_OG_IMAGES } from '@/site/config';
+import { IS_PRODUCTION, STATICALLY_OPTIMIZED_OG_IMAGES } from '@/site/config';
 import { GENERATE_STATIC_PARAMS_LIMIT, getPhotoIds } from '@/photo/db';
 import { isNextImageReadyBasedOnPhotos } from '@/photo';
 
 export let generateStaticParams:
   (() => Promise<{ photoId: string }[]>) | undefined = undefined;
 
-if (STATICALLY_OPTIMIZED_OG_IMAGES && process.env.NODE_ENV === 'production') {
+if (STATICALLY_OPTIMIZED_OG_IMAGES &&  IS_PRODUCTION) {
   generateStaticParams = async () => {
     const photos = await getPhotoIds({ limit: GENERATE_STATIC_PARAMS_LIMIT });
     return photos.map(photoId => ({ photoId }));
diff --git a/src/app/p/[photoId]/layout.tsx b/src/app/p/[photoId]/layout.tsx
index 9f353933..a70b4329 100644
--- a/src/app/p/[photoId]/layout.tsx
+++ b/src/app/p/[photoId]/layout.tsx
@@ -12,13 +12,13 @@ import {
 } from '@/site/paths';
 import PhotoDetailPage from '@/photo/PhotoDetailPage';
 import { getPhotosNearIdCachedCached } from '@/photo/cache';
-import { STATICALLY_OPTIMIZED_PAGES } from '@/site/config';
+import { IS_PRODUCTION, STATICALLY_OPTIMIZED_PAGES } from '@/site/config';
 import { GENERATE_STATIC_PARAMS_LIMIT, getPhotoIds } from '@/photo/db';
 
 export let generateStaticParams:
   (() => Promise<{ photoId: string }[]>) | undefined = undefined;
 
-if (STATICALLY_OPTIMIZED_PAGES && process.env.NODE_ENV === 'production') {
+if (STATICALLY_OPTIMIZED_PAGES && IS_PRODUCTION) {
   generateStaticParams = async () => {
     const photos = await getPhotoIds({ limit: GENERATE_STATIC_PARAMS_LIMIT });
     return photos.map(photoId => ({ photoId }));
diff --git a/src/site/config.ts b/src/site/config.ts
index 8e105123..1fead692 100644
--- a/src/site/config.ts
+++ b/src/site/config.ts
@@ -23,6 +23,12 @@ const VERCEL_PROJECT_URL = VERCEL_BRANCH_URL && VERCEL_BRANCH
   ? `${VERCEL_BRANCH_URL.split(`-git-${VERCEL_BRANCH}-`)[0]}.vercel.app`
   : undefined;
 
+export const IS_PRODUCTION = process.env.NODE_ENV === 'production' && (
+  // Make environment checks resilient to non-Vercel deployments
+  VERCEL_ENV === 'production' ||
+  !VERCEL_ENV
+);
+
 // User-facing domain, potential site title
 const SITE_DOMAIN =
   process.env.NEXT_PUBLIC_SITE_DOMAIN ||